The Austin City Council approved one of two proposals Thursday night to require apartment complexes and other rental properties to register with the city and be inspected regularly.Council members said the goal of the proposals is to better track and impose penalties on rental properties with unsafe or unsanitary conditions — and prevent incidents such as the 2012 walkway collapse at Wood Ridge Apartments in Southeast Austin, which displaced more than 160 residents.The plan crafted by Council Member Bill Spelman will require multi-family and single-family rental properties that are cited for several health-and-safety code violations in one year to register with the city and be inspected periodically.That plan passed unanimously.